Port A

Port A

GPIO Name Peripheral Function Alternate
PA 00 USARTS interfaces U0_RX
PA 01 USARTS interfaces U0_TX
PA 02 SD/MMC Card Detect
PA 03 USARTS interfaces U0_RTS
PA 04 USARTS interfaces U0_CTS
PA 05 USARTS interfaces U1_RX
PA 06 USARTS interfaces U1_TX
PA 07 SD/MMC Write Protect
PA 08 USARTS interfaces
PA 09 USARTS interfaces U1_CTS
PA 10 SPI Header SPI0_CS0
PA 11 USB USB_ID SPI Interface / SPI0_MISO
PA 12 SPI Interface SPI0_MOSI
PA 13 SPI Interface SPI0_SCK
PA 14 Dataflash SPI1_CS0
PA 15 SPI Interface SPI1_SCK
PA 16 SPI Interface SPI1_SCK
PA 17 SPI Interface SPI1_MISO
PA 18 SD/MMC SPI1_CS1
PA 19 LCD SPI1_CS2
PA 20 Joystick EXTINT_8
PA 21 Temperature Sensor ADC0
PA 22 Potentiometer ADC1
PA 23 Light sensor ADC2
PA 24 Ethernet EXTINT_3
PA 25 Joystick SCAN_0
PA 26 Joystick SCAN_1
PA 27 Joystick SCAN_2
PA 28 Joystick SCAN_3
PA 29 TWI SDA
PA 30 TWI SCL